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/*
* Check various aspects of RGB or CMYK device link,
* and RGB/CMYK profile transfer characteristics.
*
* Author: Graeme W. Gill
* Date: 2003/9/7
* Version: 1.0
*
* Copyright 2000 - 2003 Graeme W. Gill
* Please refer to License.txt file for details.
*/
/* TTBD:
*
* Make general device input, not just CMYK
*
* Allow specifying a vector in the range space.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <fcntl.h>
#include <string.h>
#include <math.h>
#include "icc.h"
#include "numlib.h"
#include "plot.h"
#include "ui.h"
void usage(void) {
fprintf(stderr,"Check CMYK/RGB/PCS->PCS/CMYK/RGB transfer response\n");
fprintf(stderr,"Author: Graeme W. Gill\n");
fprintf(stderr,"usage: transplot [-v] infile\n");
fprintf(stderr," -v verbose\n");
fprintf(stderr," -i intent p = perceptual, r = relative colorimetric,\n");
fprintf(stderr," s = saturation, a = absolute\n");
fprintf(stderr," -o order n = normal (priority: lut > matrix > monochrome)\n");
fprintf(stderr," r = reverse (priority: monochrome > matrix > lut)\n");
fprintf(stderr," -c -m -y -k Check Cyan and/or Magenta and/or Yellow and/or Black input\n");
fprintf(stderr," -r -g -b Check Red and/or Green and/or Blue input\n");
fprintf(stderr," -L -A -B Check L and/or a* and/or b* input\n");
exit(1);
}
#define XRES 256
//#define XRES 11
int
main(
int argc,
char *argv[]
) {
int fa,nfa; /* argument we're looking at */
int verb = 0;
int chans[4] = { 0, 0, 0, 0 }; /* Flags indicating which channels to plot against */
char in_name[100];
icmFile *rd_fp;
icc *rd_icco; /* Keep object separate */
int rv = 0;
/* Lookup parameters */
icRenderingIntent intent = icmDefaultIntent; /* Default */
icmLookupOrder order = icmLuOrdNorm; /* Default */
/* Check variables */
icmLuBase *luo;
icmLuLut *luluto; /* Lookup xLut type object */
icColorSpaceSignature ins, outs; /* Type of input and output spaces */
int inn; /* Number of input chanels */
icmLuAlgType alg;
int labin = 0; /* Flag */
int rgbin = 0; /* Flag */
int labout = 0; /* Flag */
int rgbout = 0; /* Flag */
error_program = argv[0];
if (argc < 2)
usage();
/* Process the arguments */
for(fa = 1;fa < argc;fa++) {
nfa = fa; /* skip to nfa if next argument is used */
if (argv[fa][0] == '-') { /* Look for any flags */
char *na = NULL; /* next argument after flag, null if none */
if (argv[fa][2] != '\000')
na = &argv[fa][2]; /* next is directly after flag */
else {
if ((fa+1) < argc) {
if (argv[fa+1][0] != '-') {
nfa = fa + 1;
na = argv[nfa]; /* next is seperate non-flag argument */
}
}
}
/* Verbosity */
if (argv[fa][1] == 'v' || argv[fa][1] == 'V') {
verb = 1;
}
/* Intent */
else if (argv[fa][1] == 'i' || argv[fa][1] == 'I') {
fa = nfa;
if (na == NULL) usage();
switch (na[0]) {
case 'p':
intent = icPerceptual;
break;
case 'r':
intent = icRelativeColorimetric;
break;
case 's':
intent = icSaturation;
break;
case 'a':
intent = icAbsoluteColorimetric;
break;
/* Special function icclib intents */
case 'P':
intent = icmAbsolutePerceptual;
break;
case 'S':
intent = icmAbsoluteSaturation;
break;
default:
usage();
}
}
/* Search order */
else if (argv[fa][1] == 'o' || argv[fa][1] == 'O') {
fa = nfa;
if (na == NULL) usage();
switch (na[0]) {
case 'n':
case 'N':
order = icmLuOrdNorm;
break;
case 'r':
case 'R':
order = icmLuOrdRev;
break;
default:
usage();
}
}
/* Cyan, Red */
else if (argv[fa][1] == 'c' || argv[fa][1] == 'C'
|| argv[fa][1] == 'r' || argv[fa][1] == 'R') {
chans[0] = 1;
}
/* Magenta, Green, a* */
else if (argv[fa][1] == 'm' || argv[fa][1] == 'M'
|| argv[fa][1] == 'g' || argv[fa][1] == 'G') {
chans[1] = 1;
}
/* Yellow, Blue, b* */
else if (argv[fa][1] == 'y' || argv[fa][1] == 'Y'
|| argv[fa][1] == 'b') {
chans[2] = 1;
}
/* L* */
else if (argv[fa][1] == 'L') {
chans[0] = 1;
labin = 1;
}
/* a* */
else if (argv[fa][1] == 'A') {
chans[1] = 1;
labin = 1;
}
/* Yellow, Blue, b* */
else if (argv[fa][1] == 'B') {
chans[2] = 1;
labin = 1;
}
/* Black */
else if (argv[fa][1] == 'k' || argv[fa][1] == 'K') {
chans[3] = 1;
}
else if (argv[fa][1] == '?')
usage();
else
usage();
}
else
break;
}
if (fa >= argc || argv[fa][0] == '-') usage();
strcpy(in_name,argv[fa]);
/* Open up the file for reading */
if ((rd_fp = new_icmFileStd_name(in_name,"r")) == NULL)
error ("Read: Can't open file '%s'",in_name);
if ((rd_icco = new_icc()) == NULL)
error ("Read: Creation of ICC object failed");
/* Read the header and tag list */
if ((rv = rd_icco->read(rd_icco,rd_fp,0)) != 0)
error ("Read: %d, %s",rv,rd_icco->err);
if (labin) {
/* Get a Device to PCS conversion object */
if ((luo = rd_icco->get_luobj(rd_icco, icmBwd, intent, icSigLabData, order)) == NULL)
error ("%d, %s",rd_icco->errc, rd_icco->err);
} else {
/* Get a PCS to Device conversion object */
if ((luo = rd_icco->get_luobj(rd_icco, icmFwd, intent, icSigLabData, order)) == NULL) {
if ((luo = rd_icco->get_luobj(rd_icco, icmFwd, intent, icmSigDefaultData, order)) == NULL) {
error ("%d, %s",rd_icco->errc, rd_icco->err);
}
}
}
/* Get details of conversion */
luo->spaces(luo, &ins, &inn, &outs, NULL, &alg, NULL, NULL, NULL, NULL);
if (labin) {
chans[3] = 0;
if (outs != icSigCmykData && outs != icSigRgbData) {
error("Expecting CMYK or RGB output space");
}
if (outs == icSigRgbData) {
rgbout = 1;
}
} else {
if (ins != icSigCmykData && ins != icSigRgbData) {
error("Expecting CMYK or RGB input space");
}
if (ins == icSigRgbData) {
rgbin = 1;
chans[3] = 0;
}
if (outs != icSigCmykData && outs != icSigLabData && outs != icSigRgbData) {
error("Expecting Lab or CMYK or RGB output space");
}
if (outs == icSigLabData)
labout = 1;
}
luluto = (icmLuLut *)luo; /* Lookup xLut type object */
{
int i, j;
double xx[XRES];
double y0[XRES];
double y1[XRES];
double y2[XRES];
double y3[XRES];
for (i = 0; i < XRES; i++) {
double ival = (double)i/(XRES-1.0);
double in[4];
double out[4];
for (j = 0; j < 4; j++)
in[j] = 0.0;
if (labin) {
in[0] = 0.5;
in[1] = 0.5;
in[2] = 0.5;
}
if (chans[0])
in[0] = ival;
if (chans[1])
in[1] = ival;
if (chans[2])
in[2] = ival;
if (chans[3])
in[3] = ival;
if (labin) {
in[0] = in[0] * 100.0;
in[1] = (in[1] - 0.5) * 254.0;
in[2] = (in[2] - 0.5) * 254.0;
}
/* Do the conversion */
if ((rv = luo->lookup(luo, out, in)) > 1)
error ("%d, %s",rd_icco->errc,rd_icco->err);
if (labout) {
//printf("~1 in %f %f %f %f, out %f %f %f\n",in[0],in[1],in[2],in[3],out[0],out[1],out[2]);
xx[i] = ival;
y0[i] = out[0]/1.0;
y1[i] = 50.0 + out[1]/2.0;
y2[i] = 50.0 + out[2]/2.0;
if (y1[i] < 0.0)
y1[i] = 0.0;
if (y1[i] > 100.0)
y1[i] = 100.0;
if (y2[i] < 0.0)
y2[i] = 0.0;
if (y2[i] > 100.0)
y2[i] = 100.0;
} else {
xx[i] = ival;
y0[i] = out[0];
y1[i] = out[1];
y2[i] = out[2];
y3[i] = out[3];
}
}
if (labout)
do_plot6(xx,y0,y1,NULL,NULL,y2,NULL,XRES);
else {
if (outs == icSigCmykData)
do_plot6(xx,y3,y1,NULL,y0,y2,NULL,XRES);
else /* Assume RGB */
do_plot6(xx,NULL,y0,y1,y2,NULL,NULL,XRES);
}
}
/* Done with lookup object */
luo->del(luo);
rd_icco->del(rd_icco);
rd_fp->del(rd_fp);
return 0;
}
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